Java Cluster.get方法代码示例

import akka.cluster.Cluster; //导入方法依赖的package包/类
@Override
public void preStart() {
    ActorRefProvider provider = getContext().provider();
    selfAddress = provider.getDefaultAddress();

    bucketStore = new BucketStoreAccess(getContext(), config.getAskDuration());

    if (provider instanceof ClusterActorRefProvider) {
        cluster = Cluster.get(getContext().system());
        cluster.subscribe(getSelf(),
                ClusterEvent.initialStateAsEvents(),
                ClusterEvent.MemberEvent.class,
                ClusterEvent.ReachableMember.class,
                ClusterEvent.UnreachableMember.class);
    }

    if (autoStartGossipTicks) {
        gossipTask = getContext().system().scheduler().schedule(
                new FiniteDuration(1, TimeUnit.SECONDS),        //initial delay
                config.getGossipTickInterval(),                 //interval
                getSelf(),                                      //target
                GOSSIP_TICK,                                    //message
                getContext().dispatcher(),                      //execution context
                getSelf()                                       //sender
        );
    }
}
 

import akka.cluster.Cluster; //导入方法依赖的package包/类
public static void main(String[] args) throws IOException {
  ActorSystem actorSystem = ActorSystem.create(CLUSTER_NAME);
  actorSystem.actorOf(SimpleClusterListener.props());
  final ActorMaterializer materializer = ActorMaterializer.create(actorSystem);

  Cluster cluster = Cluster.get(actorSystem);
  List<Address> addresses = Arrays.asList(System.getenv().get("SEED_NODES").split(","))
      .stream()
      .map(ip -> new Address("akka.tcp", CLUSTER_NAME, ip, 2551))
      .collect(Collectors.toList());
  cluster.joinSeedNodes(addresses);
}
 

import akka.cluster.Cluster; //导入方法依赖的package包/类
public ClusterWrapperImpl(ActorSystem actorSystem) {
    Preconditions.checkNotNull(actorSystem, "actorSystem should not be null");

    cluster = Cluster.get(actorSystem);

    Preconditions.checkState(cluster.getSelfRoles().size() > 0,
        "No akka roles were specified.\n"
        + "One way to specify the member name is to pass a property on the command line like so\n"
        + "   -Dakka.cluster.roles.0=member-3\n"
        + "member-3 here would be the name of the member");

    currentMemberName = MemberName.forName(cluster.getSelfRoles().iterator().next());
    selfAddress = cluster.selfAddress();
}
 

import akka.cluster.Cluster; //导入方法依赖的package包/类
/**
 * Api to make a node leave the cluster.
 * @param host hostname/ip of the node.
 * @param port port
 */
@POST
@Path("/cluster/leave")
public Response leaveCluster(@QueryParam("host") String host, @QueryParam("port") Integer port) {
    if(StringUtils.isEmpty(host) || port == null) {
        return Response.status(Response.Status.BAD_REQUEST.getStatusCode()).entity("empty hostname or port").build();
    }

    Address akkAddress = new Address("akka.tcp", actorSystemManager.retrieveActorSystem().name(), host, port);
    Cluster cluster = Cluster.get(actorSystemManager.retrieveActorSystem());
    cluster.leave(akkAddress);

    return Response.status(Response.Status.OK.getStatusCode()).build();
}
 

import akka.cluster.Cluster; //导入方法依赖的package包/类
@Override
public void leaveCluster(){

    Cluster cluster = Cluster.get(clusterSystem);
    logger.info("Downing self: {} from cluster: {}", cluster.selfAddress(), clusterSystem.name());
    cluster.leave(cluster.selfAddress());
}